Use ICU in libandroidicu

libicuuc and libicui18n are moved into APEX, but
they have no stable ABI due to the version suffix.

Use libandroidicu which provides stable symbol.
See http://go/apex-stable-icu4c-interface for the design.
See http://aosp/801855 for libandroidicu implementation.

Bug: 117094880
Test: m checkbuild
Change-Id: Ida6aac85dfb79bf8e7a3a2540e567ee211279e09
diff --git a/media/libmedia/Android.bp b/media/libmedia/Android.bp
index 6002e95..7d759e0 100644
--- a/media/libmedia/Android.bp
+++ b/media/libmedia/Android.bp
@@ -216,8 +216,7 @@
         "libutils",
         "libbinder",
         "libsonivox",
-        "libicuuc",
-        "libicui18n",
+        "libandroidicu",
         "libexpat",
         "libcamera_client",
         "libstagefright_foundation",
@@ -232,8 +231,7 @@
     export_shared_lib_headers: [
         "libaudioclient",
         "libbinder",
-        "libicuuc",
-        "libicui18n",
+        "libandroidicu",
         "libsonivox",
         "libmedia_omx",
     ],